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98 V70R blue smoke

Help, Advice and DIY Tutorials on Volvo's extremely popular car line -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, 850 R, 850 T5-R, 850 T5, 850 GLT
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Bren
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98 V70R blue smoke

Post by Bren » Thu Mar 24, 2016 11:57 am

Hey guys,

My colleague mentioned to me today that as I pulled out of the office parking lot (perhaps...gingerly :)) that there was some blue smoke coming from the tailpipe. there's NO blue smoke when it idles at all...so this is likely only happening under load.

what would be the likely cause of burning oil like this?
Garage:
1998 V70R
2006 XC90 2.5T - Family Hauler
1993 Audi S4 (Sold)
2001 VW Jetta 1.8T (Sold)
1988 Mazda 323 GTX (Sold in pieces)

scot850
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scot850

Re: 98 V70R blue smoke

Post by scot850 » Thu Mar 24, 2016 1:05 pm

Possibly worn valve stem seals. I usually consider the valve stem seals when the smoke is on load (Accelerating) or on over-run with sudden lift-off.

I know you have done a lot of work on this car, but I'm sorry I can't recall if you replaced the PCV system. That would be my other starting point.

Neil.
2000 V70 R - still being an endless PITA
2006 XC70
2003 Toyota 4Runner V8 Limited
2015 Kia Sportage EX-L
1993 850 GLT -Sold
1998 V70 XC - Sold
1997 Volvo 850 SE NA - Went to niece in California - Sold
2000 V70 SE NA - New project and test bed - Sold

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bmdubya1198
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bmdubya1198

Re: 98 V70R blue smoke

Post by bmdubya1198 » Thu Mar 24, 2016 2:02 pm

+1 on the valve stem seals. But was the car cold when he noticed this? From what I've heard, the smoke from valve stem seals is seen more when the car is warmed up.
2000 V70R Venetian Red/Charcoal M56 Swapped 195k
2003 S60 2.4T Silver/Black 112k
2007 XC90 V8 AWD Sport Titanium Grey/Black 166k
1991 944 Turbo Dark Green/Beige 173k
1992 245 Base White/Beige 249k
2006 BMW 330i
1999 BMW 528i
Sold-
2000 S70 GLT Mystic Silver/Taupe 253k
1993 944 Base Beige/Beige 221k
1998 V70 GLT Black/Beige 199k
1998 S90- Silver/Gray 207k
1995 850 GLT Tropic Green... crushed
2001 S60 2.4T Black/Black 230k
1988 744 Turbo M46 Beige Metallic/Beige 188k

Bren
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Re: 98 V70R blue smoke

Post by Bren » Sun Mar 27, 2016 12:49 pm

Thanks.

Yes the car was relatively cold when this happened...hmm

I haven't yet done the PCV system on the car but it likely needs it. Haven't investigated yet - waiting for the Canadian weather to warm up :)

Can anyone recommend a place to get the PCV parts that won't destroy me on shipping or duty to Canada?
Garage:
1998 V70R
2006 XC90 2.5T - Family Hauler
1993 Audi S4 (Sold)
2001 VW Jetta 1.8T (Sold)
1988 Mazda 323 GTX (Sold in pieces)

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erikv11
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erikv11

Re: 98 V70R blue smoke

Post by erikv11 » Sun Mar 27, 2016 1:10 pm

Blue smoke at first start-up (i.e. when cold) is the classic symptom of bad valve stem seals: while the car is sitting somewhere parked, the oil leaks down onto the exhaust valves, and pools up there. At startup, the pooled oil burns off (hence the blue puff) once the exhaust is hot enough to burn it. Same pooling happens when it sits idling, then it puffs next time you open the throttle.
'95 854 T5-R, Motronic 4.4, 185k
'96 855 NA, 145k
'98 S70 NA, 220k (living out west)
'98 V70, T5 tune-injectors-turbo, LPT engine, 286k
'06 S60 R, 167k
'99 Camry V6 :shock: 125k
gone: '96 NA 850 210k, '98 NA V70 182k

Bren
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Re: 98 V70R blue smoke

Post by Bren » Sun Mar 27, 2016 5:08 pm

Definitely NO blue smoke at first start up.

...was just told of blue smoke second-hand when pulling away from a stop.
Garage:
1998 V70R
2006 XC90 2.5T - Family Hauler
1993 Audi S4 (Sold)
2001 VW Jetta 1.8T (Sold)
1988 Mazda 323 GTX (Sold in pieces)

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erikv11
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erikv11

Re: 98 V70R blue smoke

Post by erikv11 » Sun Mar 27, 2016 7:08 pm

Yeah, that fits too. It's a bummer but an unfortunate fact of life, a lot of these 20-year old white block engines have bad valve stem seals.
'95 854 T5-R, Motronic 4.4, 185k
'96 855 NA, 145k
'98 S70 NA, 220k (living out west)
'98 V70, T5 tune-injectors-turbo, LPT engine, 286k
'06 S60 R, 167k
'99 Camry V6 :shock: 125k
gone: '96 NA 850 210k, '98 NA V70 182k

Bren
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Joined: Tue Oct 13, 2015 12:29 pm
Year and Model: 1998 V70R
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Bren

Re: 98 V70R blue smoke

Post by Bren » Sun Mar 27, 2016 7:13 pm

I'm just going to pretend it's the PCV system and see if that helps first. :)
Garage:
1998 V70R
2006 XC90 2.5T - Family Hauler
1993 Audi S4 (Sold)
2001 VW Jetta 1.8T (Sold)
1988 Mazda 323 GTX (Sold in pieces)

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erikv11
Posts: 9687
Joined: Sat Jul 25, 2009 2:03 pm
Year and Model: 850, S/V70, 06 S60R
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erikv11

Re: 98 V70R blue smoke

Post by erikv11 » Sun Mar 27, 2016 8:13 pm

And it could be, you are right, go for it!
:)
'95 854 T5-R, Motronic 4.4, 185k
'96 855 NA, 145k
'98 S70 NA, 220k (living out west)
'98 V70, T5 tune-injectors-turbo, LPT engine, 286k
'06 S60 R, 167k
'99 Camry V6 :shock: 125k
gone: '96 NA 850 210k, '98 NA V70 182k

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